Fish hook

ABSTRACT

A fish hook comprises a shank 12 terminating at one end in a barbed hook formation 14 and at the other end in a head 16. A hook-closing element 18 which is of resiliently flexible steel wire is mounted on the head 16 and is displaceable between a retracted position in which it lies adjacent the shank, and an extended position in which it extends across the gap between the shank and the tip of the hook formation. A detent pin 28 holds the hook-closing element in the retracted position. When the detent pin is pulled, the hook-closing element is released so that it moves, under action of its bias, from the retracted to the extended position.

The term "fish hook" in this specification is used in a broad sense andshould be interpreted as including also a gaff and other fishingaccessories having a hook whereby a fish can be hooked.

According to the invention there is provided a fish hook comprising ashank which terminates at one end in a hook formation and at the otherend in a shank head, a hook-closing element which is displaceablebetween a retracted position in which it lies adjacent the shank and anextended position in which it extends across the gap between the shankand the tip of the hook formation, and a detent mounted on the shankhead so as to be slidably displaceable with respect to the shank in thelongitudinal direction of the shank, between a first position in whichit acts to hold the hook-closing element in the retracted position, anda second position in which it releases the hook-closing element fordisplacement to the extended position.

The hook-closing element may be resiliently biased towards the extendedposition.

The detent may be provided with an eye for use in securing the fish hookto a fishing line. With this arrangement, when a fish pulls on the hook,the tension in the fishing line will be effective to displace the detentfrom the first position to the second position, thus releasing thehook-closing element for displacement from the retracted position to theextended position.

The eye may be in the form of a ring which passes through a transverselyextending opening in the detent. There may also be a transverse openingin the shank head, the ring passing through the transverse opening inthe shank head as well. The transverse opening in the shank head shouldbe large enough to permit slidable displacement of the detent betweenthe first and second positions without interference. With thisarrangement the ring will serve to hold the detent captive with respectto the shank head.

The shank may have a recess therein in which the hook-closing element isat least partly accommodated when in the retracted position.

The hook-closing element may be in the form of a length of spring steelwire which has a hairpin bend therein, to form the hook-closing elementwith a limb on each opposite side of the bend, the end of each limbbeing bent through right angles so that the two ends extend towards oneanother, the two ends being offset with respect to one another, and eachof the ends entering in a corresponding hole in the shank head.

One of the limbs of the hook-closing element may have a transverselyextending portion, the arrangement being such that when the detent is inthe first position it is capable of engaging with the transverselyextending portion to hold the hook-closing element in the retractedposition.

The shank head may be provided with a shoulder whose arrangement is suchthat, when the hook-closing element is in the extended position, saidtransversely extending portion abuts on the shoulder.

The invention will now be described in more detail, by way of example,with reference to the accompanying drawings.

In the drawings:

FIG. 1 is a side view of a fish hook in accordance with the invention,being shown in its triggered condition;

FIG. 2 is a side view of the fish hook when in its set condition;

FIG. 3 is a view in the direction of arrow III in FIG. 2;

FIG. 4 shows the various component parts of the fish hook, in adisassembled condition; and

FIG. 5 is a detail section on V--V in FIG. 2.

Referring now to the drawings in more detail, reference numeral 10generally indicates a fish hook which comprises a shank 12 whichterminates at one end in a barbed hook formation 14. At the end oppositethe hook formation 14, the shank 12 has a head 16.

As can best be seen in FIG. 3, the thickness of the material from whichthe shank 12, the hook formation 14, and the shank head 16 is made isgreater in the region of the head 16 than it is in the region of theshank 12 and hook formation 14.

The fish hook 10 further comprises a hookclosing element 18 which is inthe form of a length of resiliently flexible stainless steel wire whichhas a hairpin bend therein at 20, to form the hook-closing element withlimbs 22.1 and 22.2 on opposite sides of the bend. Each limb 22.1, 22.2has the free end 24 thereof bent through right angles, the endsextending towards one another and being offset with respect to oneanother. Each of the ends 24 is received in a corresponding transverselyextending hole 26 in the shank head 16. When the hook-closing element 18is in the position illustrated in FIGS. 2 and 3 it is in a strainedcondition, urging the end 20 thereof towards the tip of the hookformation 14.

The fish hook 10 further comprises a detent which is in the form of apin 28 having a grooved head 30. The detent pin 28 is a sliding fit in alongitudinally extending hole in the shank head 16, ie extending in adirection which is in line with the shank 12. The pin 28 crosses aslotted opening 32 in the shank head 16. A ring 34 (not shown in FIGS. 1to 4) is fitted to the pin 28, the ring passing through an opening 36 inthe pin and through the opening 32. The ring 34 serves to keep the pin28 captive with respect to the shank head 16 and also serves as an eyeby means of which the fish hook can be tied to the end of a fishingline.

The pin 28 is slidable between a first position as illustrated in FIGS.2 and 3, in which the head 30 holds the hook-closing element 18 in theretracted position, and a second position as illustrated in FIG. 1, inwhich it releases the hook-closing element for displacement to theextended position.

It will be seen that the shank 12 has a recess 38 therein, in which thehook-closing element 18 is accommodated when in the retracted position.

In use, the fish hook 10 is secured to a fishing line via the ring 34.The hook-closing element 18 is moved to the retracted position asillustrated in FIG. 2 and 3, and the pin 28 slid to the positionillustrated in FIGS. 2 and 3. In this position the pin 28 holds thehook-closing element in the retracted position. A transversely extendingpart 40 of the limb 22.2 seats in the groove of the head 30, to offer acertain degree of resistance to movement of the pin 28 from the positionillustrated in FIGS. 2 and 3.

The head 16 has a shoulder 42 whose arrangement is such that the part 40of the limb 22.2 abuts on the shoulder when the hook-closing element 18is in the extended position as illustrated in FIG. 1. This will act asan end stop for the hook-closing element, to prevent or limit pressureexerted by the end 20 on the hook formation 14.

The effect of a fish biting and pulling on the hook 10 will be to causethe pin 28 to move from the position illustrated in FIGS. 2 and 3 to theposition illustrated in FIG. 1, thereby releasing the hook-closingelement 18. This causes the hook-closing element 18, under action of itsresilient bias, to move to the extended position illustrated in FIG. 1,making it difficult if not impossible for the fish to shake loose.

In the case of a gaff, in which the shank 12 will be connected to theshaft of the gaff, a part corresponding to the shank 12 will be slidablewith respect to the shaft, and a part corresponding to the pin 28 (iethe detent) will be fixed to the shaft.

We claim:
 1. A fish hook comprising a shank which terminates at one endin a hook formation and at the other end in a shank head, a hook-closingelement having a mounted end and a free end remote from the mounted end,the hook-closing element being displaceable between a retracted positionin which the hook-closing element lies adjacent the shank and anextended position in which the hook-closing element extends across a gapbetween the shank and a tip of the hook formation, and a detent mountedon the shank head so as to be slidably displaceable along a passage inthe shank, in the longitudinal direction of the shank, between a firstposition in which the detent acts to hold the hook-closing element inthe retracted position, and a second position in which the detentreleases the hook-closing element for displacement to the extendedposition, the hook-closing element having an abutment on which thedetent acts when holding the hook-closing element in the retractedposition, and the abutment being between the free end and the mountedend of the hook-closing element, spaced from the free end and the detentbeing provided with a ring which passes through a transversely extendingopening in the detent.
 2. The fish hook of claim 1 wherein thehook-closing element is resiliently biased towards the extendedposition.
 3. The fish hook of claim 1 wherein there is a transverseopening in the shank head and the ring passes through said transverseopening.
 4. The fish hook of claim 1 wherein the shank has a recess inwhich the hook-closing element is at least partly accommodated when inthe retracted position.
 5. The fish hook of claim 1 wherein thehook-closing element is in the form of a length of spring steel wirewhich has a hairpin bend that forms the hook-closing element with a limbon each opposite side of the bend, the end of each limb being bentthrough right angles so that the two ends extend towards one another,the two ends being offset with respect to one another, and each of theends entering in a corresponding hole in the shank head.
 6. The fishhook of claim 6 wherein the abutment is formed by a transverselyextending portion of one of the limbs.
 7. The fish hook of claim 7wherein the shank head is provided with a shoulder whose arrangement issuch that, when the hook-closing element is in the extended position,said transversely extending portion abuts on the shoulder.